Zhao HW, Luo JH, Xu HX, Wang DH, Lai YR, Chen MN, Lv JY, Xie XY, Lu MD, Chen W. The value of contrast-enhanced transrectal ultrasound in predicting the nature of prostate diseases and the Gleason score of prostate cancer by a subjective blood flow grading scale.
Urol Int 2011;
87:165-70. [PMID:
21832814 DOI:
10.1159/000327988]
[Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Accepted: 04/01/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVES
To investigate the value of contrast-enhanced transrectal ultrasound (CETRUS) in predicting the nature of prostate diseases and prostate cancer Gleason score.
METHODS
106 patients suspected of prostate cancer were evaluated with CETRUS followed by systematic biopsy. Prostate blood flow of CETRUS was graded using a subjective 5-point scale. The relationships between ultrasound findings and biopsy outcomes, as well as prostate cancer Gleason score were analyzed. Receiver operating characteristic (ROC) analysis was performed to evaluate the diagnostic performance of CETRUS.
RESULTS
Biopsy revealed prostate cancer in 43 of 106 patients. The proportions of malignant histology in the groups with CETRUS scores of 1-5 were 0% (0/10), 8.3% (2/24), 31.7% (13/41), 88.9% (16/18) and 92.3% (12/13), respectively. The rate of prostate cancer with a Gleason score ≥7 in the groups with a CETRUS score of 2-5 were 0% (0/2), 15.4% (2/13), 37.5% (6/16) and 91.7% (11/12), respectively. The blood flow grading scale correlated with pathological outcomes and Gleason score significantly (r = 0.66, p < 0.001; and r = 0.61, p < 0.001, respectively). ROC analysis showed the area under the ROC curve to be 0.87.
CONCLUSIONS
CETRUS-based blood flow grading scale is a reliable tool for predicting the pathological outcome of prostate diseases and prostate cancer Gleason score noninvasively.
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